RE: Userspace ACPI interpreter ( was RE: [ACPI] [RFC] dev_acpi: support for userspace access to acpi)

[Yu, Luming]

>
>On Thu, Oct 28, 2004 at 01:37:52AM -0400, Len Brown wrote:
>> One way to experiment with a user-mode ACPI interpreter would be to 
>> continue to use the kernel-mode interpreter for boot up , 
>and cut over 
>> to the user-mode interpreter at /sbin/init.  The kernel-mode 
>interpreter 
>> could be sent the way of free_initmem() which is called just before 
>> /sbin/init is invoked.
>
>Is there a significant advantage to doing having a user-mode ACPI
>interpreter?  The only advantage I can think of is that the ACPI
>interpreter could now live in pageable memory.  Are there any others?

One reason for kernel-mode interpreter is to live in unpageable memory.

User-mode ACPI interpreter advantages:

1. Without losing platform functionality, user-mode interpreter
can make kernel less complex, thus more stronger.

2. Kernel can release from AML issues.
...

Thanks,
Luming
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